{"id":"CVE-2026-41051","aliases":["DEBIAN-CVE-2026-41051","EUVD-2026-29920","GHSA-7mqw-hr29-pj76","SUSE-SU-2026:2116-1","SUSE-SU-2026:21994-1","SUSE-SU-2026:22041-1","UBUNTU-CVE-2026-41051","openSUSE-SU-2026:10600-1","openSUSE-SU-2026:20900-1"],"status":"published","title":"csync2 uses insecure temporary directories when compiled with C99 or later","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","severity":{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00075,"percentile":0.00092,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-367"],"published":"2026-04-22T00:00:00Z","modified":"2026-10-27T09:47:29Z","fixes":[{"ecosystem":"Debian:14","package":"csync2","fixed_in":["2.0-42-g83b3644-6"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise High Availability Extension 16.0","package":"csync2","fixed_in":["2.0+git.1600444747.83b3644-160000.3.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Server for SAP applications 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Availability Extension 16.0","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0+git.1600444747.83b3644-160000.3.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0+git.1600444747.83b3644-160000.3.1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0+73d3293-2","2.0+73d3293-2build1","2.0+73d3293-2build2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-8-g175a01c-4ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-8-g175a01c-4ubuntu2","2.0-22-gce67c55-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-25-gc0faaf9-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-2","2.0-42-g83b3644-2build1","2.0-42-g83b3644-2build2","2.0-42-g83b3644-2build3"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-2build3","2.0-42-g83b3644-3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-4","2.0-42-g83b3644-6"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0-42-g83b3644-3","2.0-42-g83b3644-3build1","2.0-42-g83b3644-4"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"csync2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0+git.1600444747.83b3644-3.1"}]}]}],"products":[{"vendor":"suse","product":"opensuse tumbleweed"}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41051","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41051"},{"url":"https://github.com/advisories/GHSA-7mqw-hr29-pj76"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-41051","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20262116-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1262472","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-41051","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202621994-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202622041-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-41051","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-41051","tags":["report"]},{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1262472","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-41051","title":"csync2 uses insecure temporary directories when compiled with C99 or later","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","status":"published","published":"2026-05-13T08:37:38.405Z","modified":"2026-05-13T19:24:11.916Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T13:41:08.498858Z"}],"euvd":[{"id":"EUVD-2026-29920","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","status":"published","published":"2026-05-13T08:37:38Z","modified":"2026-05-13T19:24:11Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:04:33.260537Z"}],"ghsa":[{"id":"GHSA-7mqw-hr29-pj76","title":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU...","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","status":"published","published":"2026-05-13T18:30:52Z","modified":"2026-05-13T21:33:08Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T15:08:08.28199Z"}],"nvd":[{"id":"CVE-2026-41051","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","status":"published","published":"2026-05-13T13:01:53.787Z","modified":"2026-10-26T14:10:00.13Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:12:19.020465Z"}],"osv":[{"id":"DEBIAN-CVE-2026-41051","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","status":"published","published":"2026-05-13T13:01:53.787Z","modified":"2026-10-27T09:47:29.875990259Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:45:54.892385Z"},{"id":"UBUNTU-CVE-2026-41051","description":"csync2 uses insecure temporary directories when compiled with C99 or later, allowing for TOCTOU style attacks on the temporary directories.","status":"published","published":"2026-05-13T13:01:00Z","modified":"2026-10-17T12:58:14.12937685Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:56:16.686388Z"},{"id":"openSUSE-SU-2026:10600-1","title":"csync2-2.0+git.1600444747.83b3644-3.1 on GA media","description":"These are all security issues fixed in the csync2-2.0+git.1600444747.83b3644-3.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-04-22T00:00:00Z","modified":"2026-04-23T08:45:34.778717Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20900-1","title":"Security update for csync2","description":"This update for csync2 fixes the following issues\n\nSecurity issue:\n\n- CVE-2026-41051: uses insecure temporary directories when compiled with 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